I too have both, scope dependent. Both are extremely well made and do the job perfectly. However, in most cases I prefer the single strap BKL 300, because they place the scope 3mm (24mm from bottom clamp to inside lowest part of the mount) taller than the Sportsmatch HT036 high dual strap versions (21mm), plus, being single strap, they allow room for scope add-ons e.g. PA pointer, NV kit etc. But then Sportsmatch does, if needed, a HT071 extra high (27mm) dual band set. Check out http://www.tawnadoairguns.com for good prices from a helpful and wise man. No, I'm not associated in any way - I just happened to come across this chap one day en route to a job.